Gold purifying resin process

A technology of gold and craftsmanship, which is applied in the field of gold purification by resin method, can solve the problems of poor product quality, small application range, and complicated equipment, and achieve the effect of small footprint, good product quality, and simple equipment

Active Publication Date: 2007-01-03
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a process for purifying gold by resin method, which solves the problem

Method used

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  • Gold purifying resin process

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 2:

[0025] Follow the steps below to take 285g of gold mud, the main components of gold mud: Au 18.97%, Ag 41.82%, Cu 0.023%, Pb 0.22%, Fe 0.31%;

[0026] step 1:

[0027] The gold mud of the above grade is dried and broken into the impurity removal reactor, and then added with a liquid-solid ratio of 5:1 and a concentration of 30% sulfuric acid. The heating temperature is controlled to 70°C, and the mixer speed is controlled to 200r / min; the reaction time is 5 hours. The reaction is carried out under normal pressure. After the reaction is completed, stop heating and stirring, filter with a vacuum pump, and rinse with hot water 3 times after filtration; add the washed sulfuric acid residue to the desilvering reactor again, enter step 2, and open while filtering The induced draft fan, open the spray tower, and at the same time open the exhaust valve on the top of the impurity-removing reactor; Step 1 The impurity-removing filtrate is adsorbed by activated carbon, an...

Example Embodiment

[0035] Example 3:

[0036] Carry out the following steps, take 185g gold mud, the main components of the gold mud: Au 22.21% Ag 56.95%, Cu 0.019%, Pb 0.32%, Fe 0.58%;

[0037] step 1:

[0038] The gold mud of the above grade is dried and crushed into the impurity removal reactor, and then added with a liquid-solid ratio of 6:1 and a concentration of 25% sulfuric acid. The heating temperature is controlled at 65°C, and the mixer speed is controlled at 250r / min; the reaction time is 4 hours. The reaction is carried out under normal pressure. After the reaction is completed, the heating and stirring are stopped, and the vacuum pump is used to filter, and then rinse with hot water 3 times; the washed sulfuric acid slag is re-added to the desilvering reactor, and then enters step 2. Fan, open the spray tower, and at the same time open the exhaust valve on the top of the impurity removal reactor; Step 1 The impurity removal filtrate is adsorbed by activated carbon, and the acidic wastew...

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Abstract

The present invention relates to gold purifying resin process. The process of extracting gold with gold slime includes the following steps: depurating gold slime with sulfuric acid; eliminating silver with nitric acid; dissolving the nitric acid sludge with aqua regia in a dissolving reactor, regulate pH value to 1-3 after finishing reaction, filtering with a vacuum pump and collecting the filter residue for collecting gold; pressing the filtrate to depurating resin column, adding sodium sulfite in a reducing reactor for reducing, filtering with a vacuum pump, washing gold powder with hot water for several times, stoving and casting ingot. The process has wide applicable range and other advantages.

Description

technical field [0001] The invention relates to a gold mud treatment technology, in particular to a process for purifying gold by a resin method. Background technique [0002] As we all know, with the advancement of science and technology, there are many methods for gold purification at home and abroad, mainly including extraction method, water chlorine method, electrolysis method, etc. Among them, the selection of extraction agent in the extraction method is very important, and the choice of extraction agent with good performance is very important. It can have a good effect of separating gold and impurities, achieve the purpose of gold purification, and the purity of gold is also high. The current extraction agent is mainly aimed at the gold in the precious liquid, so the process requires extraction and stripping, and the process is long; some The data report the method of direct reduction in the organic phase. When the gold powder is fine, this method is easy to cause the ...

Claims

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Application Information

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IPC IPC(8): C22B3/24C22B11/00
CPCY02P10/20
Inventor 巩春龙陈民友杜淑芬袁玲
Owner CHANGCHUN GOLD RES INST
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